Love the pomodoro technique to focus, but why do you think that a simple timer isn't enough?

Flowkeeper is an old-school desktop application, which implements rather rigorously what Francesco Cirillo described in his original "Pomodoro Technique" book.

Some of the examples:

- It makes breaks unconditional. Aborting a break voids the corresponding pomodoro.

- There are no half or quarter-pomodoros. You can’t mark a pomodoro as completed prematurely, only void it.

- You can record interruptions.

- The tasks are estimated visually, as in the book, and the app distinguishes between planned and unplanned stuff, so that you can analyze it retrospectively.

- You can have several backlogs and move work items between them.

I'm the author, will appreciate your feedback and improvement ideas.